Crossword Genius

A light across the ship (5)

Ross

I believe the answer is:

abeam

'across the ship' is the definition.
(nautical term)

'a light' is the wordplay.
'light' becomes 'beam' (beam is a kind of light).
'a'+'beam'='ABEAM'

(Other definitions for abeam that I've seen before include "neither fore nor aft?" , "At right angles to the side of a ship" , "To the right or left of the centre of the ship" , "from side to side on voyage?" , "at right angles to vessel" .)

I've seen this clue in The Irish News and The Globe and Mail.
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